The Irishman responded by writing: “Hahahaha very good. Keep up the good work my son. Yours sincerely, Senior."

This started a couple of weeks ago when Mayweather posted to his Instagram, talking about McGregor’s recently reported issues in a Dublin bar where it was said the Irishman had a fight with cartel members.

Floyd Mayweather asks for the odds on his potential 2018 MMA debut with another video in the Octagon